System for supplying hydrogen gas to engine

Abstract

A system for supplying hydrogen gas to an engine is disclosed. The system includes a main line configured to send hydrogen gas produced in a hydrogen gas producer by electrolysis to a supply line; a sub-line configured to send hydrogen gas from a hydrogen absorbing alloy cylinder to the main line, a governor configured to maintain an engine rotation speed within certain range; and a control device. The governor sends a signal corresponding to the engine rotation speed to the control device. A pressure regulating valve is disposed in the sub-line to be downstream with respect to the hydrogen absorbing alloy cylinder to regulate a supply amount of added hydrogen. An opening degree of the valve is adjusted based on a signal from the control device corresponding to the opening degree of the valve for supplying the added hydrogen with an amount according to a load state of the engine.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is the U.S. National Phase of International Application No. PCT / JP2020 / 040311, filed Oct. 27, 2020. This application claims priority to Japanese Patent Application No. 2019-196841 filed Oct. 30, 2019, and Japanese Patent Application No. 2020-115462 filed Jul. 3, 2020. The entire contents of those applications are incorporated by reference herein in their entireties.TECHNICAL FIELD[0002]The present invention relates to a system for supplying hydrogen gas to air supply or to a gas fuel supply line, and relates to a system that enables long-term supply of hydrogen gas.BACKGROUND ART[0003]Japanese Patent No. 6328186 proposes an addition of a trace amount (0.01 to 0.1 vol %) of hydrogen to air supply as a method for efficient combustion of a polymer liquid fuel such as gasoline, diesel, or heavy oil in an engine.[0004]In the method, when the fuel is ignited, the hydrogen gas in the air supply is also ignited, and the combustio...

AI Technical Summary

Benefits of technology

The present invention provides a hydrogen gas supply system that can easily adjust the amount of hydrogen gas needed for an engine without having to use a large hydrogen gas producer. This system uses a hydrogen absorbing alloy cylinder to store and release hydrogen gas as needed, allowing for a small hydrogen gas producer to be used and increasing the flexibility of installation. Additionally, this system allows for continuous supply of hydrogen gas for a long period of time, ensuring a steady supply of hydrogen gas to the engine.

Problems solved by technology

However, a vessel or the like uses an engine of an extremely large displacement and continuously operates such an engine for a long period of time, which requires a large amount of hydrogen.

In some existing vessels or the like, such an electrolysis apparatus cannot be installed in their limited space such as an engine room.

For the operation of an engine for a long period of time such as one week or one month, however, a large number of cylinders must be loaded, which is not realistic.

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